title: An ultraviolet photodetector fabricated from WO₃ nanodiscs/reduced graphene oxide composite material.
abstract: A high sensitivity, fast ultraviolet (UV) photodetector was fabricated from WO₃ nanodiscs (NDs)/reduced graphene oxide (RGO) composite material. The WO₃ NDs/reduced GO composite material was synthesized using a facile three-step synthesis procedure. First, the Na₂WO₄/GO precursor was synthesized by homogeneous precipitation. Second, the Na₂WO₄/GO precursor was transformed into Na₂WO₄/GO composites by acidification. Finally, the Na₂WO₄/GO composites were reduced to WO₃ NDs/RGO via a hydrothermal reduction process. The UV photodetector showed a fast transient response and high responsivity, which are attributed to the improved carrier transport and collection efficiency through graphene. The excellent material properties of the WO₃ NDs/RGO composite demonstrated in this work may open up new possibilities for using WO₃ NDs/RGO for future optoelectronic applications.
authors.affiliation: Department of Electrical, Computer and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA. shaod@rpi.edu
authors.forename: Dali
authors.initials: D
authors.lastname: Shao
authors.forename: Mingpeng
authors.initials: M
authors.lastname: Yu
authors.forename: Jie
authors.initials: J
authors.lastname: Lian
authors.forename: Shayla
authors.initials: S
authors.lastname: Sawyer